[PATCH 0/3] Fixing usb_wwan NULL pointer dereferencing

[Bjørn Mork <bjorn@xxxxxxx>]

OK, I take my chances on submitting this in the middle of the merge
window.  This should ideally have been in -rc1 to prevent the 100%
reproducible Ooopses which are bound to hit people testing -rc1 with
any of these 3 drivers...

Changes from the RFC patchset:

- new patch adding usb_autopm_get_interface()/usb_autopm_put_interface()
  wrapping around port_probe and port_remove, as suggested by Alan Stern.
  This is necessary to prevent suspend/resume from racing against
  port_probe and  port_remove.  With this wrapping in place, we can
  rely on portdata not changing under our feet inside suspend and
  resume.

- protect suspend against portdata being NULL.  As pointed out by Alan
  Stern, suspend may very well be called after port_remove as well. No
  problem trigging that.  Just set the autosuspend delay to 0 and
  unload the driver.


Bjørn Mork (3):
  usb: usb_wwan: replace release and disconnect with a port_remove hook
  usb: serial: prevent suspend/resume from racing against probe/remove
  usb: usb_wwan: resume/suspend can be called after port is gone

 drivers/usb/serial/bus.c      |   15 +++++++--
 drivers/usb/serial/ipw.c      |    3 +-
 drivers/usb/serial/option.c   |    4 +--
 drivers/usb/serial/qcserial.c |    5 ++-
 drivers/usb/serial/usb-wwan.h |    3 +-
 drivers/usb/serial/usb_wwan.c |   68 ++++++++++++++++++-----------------------
 6 files changed, 47 insertions(+), 51 deletions(-)

-- 
1.7.10.4

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